Bernd and Hilla Becher (Siegen 1931 – 2007 Rostock / Potsdam 1934 – 2015 Düsseldorf), ”KÜHLER, ZECHE HANNOVER BOCHUM” 1973 Signed, titled and dated by both artists in pencil on the reverse: Bernhard Becher Hilla Becher KÜHLER, ZECHE HANNOVER BOCHUM 1973. Here a label of the Schönewald Fine Arts Gallery GmbH 50,5 × 62 cm Gelatin silver print Private Collection, Austria (acquired from the artist couple) Exh. cat.: Bernd und Hilla Becher: Zeche Hannover. Die Photographische Sammlung, SK Stiftung Kultur Köln. Munich, Schirmer/Mosel, 2020, p._48 (there titled „Riesenkühler“)